Example of function overloading in C++

Write a program for addition using function overloading .

#include<iostream.h>

#include<conio.h>

int sum(int,int);

float sum(float,float); double sum(int,float); 
int sum(int a,int b)

{

return(a+b);

}

float sum(float x,float y)

{

return(x+y);

}

double sum(int p,float q)

{

return(p+q);

}

void main()

{

clrscr();

cout<<"Double's sum="<<sum(5,2.3f);<<endl;

cout<<"Int's sum="<<sum(5,5);<<endl;

cout<<"Float's sum="<<sum(5.5f,3.2f);<<endl;

getch();

}

Output:

Double's sum=7.3

Int's sum=10

Float's sum=8.8